Henry g



(No Model.)

H. G. BUTLER.

SCRAPER.

Patented Mar. 14, 1893.

UNITED STATES PATENT OEEICE.

HENRY G. BUTLER, OF KENOSHA, WISCONSIN, ASSIGNOR OF ON E-IIALF TOWILLIAM BUTLER, OF SAME PLACE.

SCRAPER.

SPECIFICATION forming part of Letters Patent No. 493,421, dated March14, 1893.

Application filed September 19, 1892. Serial No. 446.294. (No model.)

To @ZZ whom t may concerns Be it known that I, HENRY G. BUTLER, acitizen of the United States, residing at Kenosha, in the county ofKenosha and State of Wisconsin, have invented a new and usefulImprovement in Scrapers, of which the following is a specification.

My invention relates to an improvement in the class of scrapers adaptedto be operated by animal or steam power particularly for earthexcavating purposes, as in digging sewers, canals, cellars, foundations,and the like, and, in burning clay to make ballast, for scraping up theclay from the ground and depositing it on the pile or fire My objectsare to provide a strong and durable construction of the scraper, whichshall present no external obstructions to its progress, in cutting itsway through the soil; which shall, if the scraper be of the variety tobe operated by hoisting to dump it, permit the dumping to beaccomplished readily and effectively; and by which the leading plow-endof the scraper is rendered peculiarly efficacious for its purpose.

In the accompanying drawings, Figure 1 is a broken view in sideelevation of my improved scraper. Fig. 2 is a plan view of the same.Fig. 3 is a plan view of the plow; and Fig. 4. is a perspective view ofthe plow detached.

A is the body of the scraper, shown as of general rectangular shape andformed preferably, as to its sides and back, at least, of a single plateof steel with a section removed from the base of the back to afford adrainage-opening r for service when the scraper is operated in water orwet soil. To afford desired rigidity of the sides, I may extend acrossthe top of the front end of the body-portion a bracing-bar q, bent toright-angles at its opposite ends and inserted between and securelyriveted, atthe bent ends, to the sides of the scraper; in addition, theplow B, hereinafter described, braces the forward end of thebody-portion A at its base, the hangerbar p, securely riveted againstthe inner surfaces of the sides, and which should be a heavy forgingextending high enough above the sides to clear the soil in filling andto insure balancing the loaded scraper, bracesthe body-portion at itscenter, while the back o performs the same function at the rear.

The most important feature of myimprovement is the plow B, which Iprefer to form of a single plate of plow-steel. In one edge of the plateare formed the teeth n, preferably of the shape illustrated, each havingits cutting edges formed by beveling, as at c, laterally outward anddownward, the bevel being also formed on the forward edge of the plowbarm between the teeth. Toward the ends of the plow-bar it is turned toright-angles from a line at or near the center of each endtooth n', andthe forward edges presented along the bent ends n2 of the plow-bar,which extend upward along and are riveted to the outer surfaces of thesides of the body A, are sharpened and afford vertical cutters, by beingbeveled, near their bases at the hollowed portions illustrated, outwardfrom the inner surfaces, as represented at t, the bevels t thuscorresponding with those on the outer edges of the end-teeth n. The plowis also fastened to the base of the body-portion A. Thus the plow isadapted the better to cut its way through the soil and in so doing tocrowd the loosened dirt into itself, functions which permit the scrapingto be performed continuously in the same furrow, as required,forexample, in excavating for a sewer.

To adapt the plow-teeth the better, in being dragged, to engage theground and cut their way through the soil, instead of tearing it, andrequiring for the purpose that the scraper be tipped forward, I set themin a peculiar manner, described as follows: In bending the ends of theplow-bar into their relatively right-angle positions, the intermediatesection of the bar is slightly bent to tip it forward in a downwarddirection, thus to or about to the incline represented in Fig. l,whereby the pitch of the forward projecting plow-teeth is downward; butthis pitch is then altered by bending the teeth upward along the line oftheir junction with the bar m to or about to such an angle as wouldcause the bend at a: or heel of the plow to be slightly above astraight-edge extended from the points of the plow-teeth to the base ofthe back o.

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At the forward end of the scraperI provide a draft-bar l, formed of aheavy forging, and which is pivotally connected at its bent ends withthe inner sides of the body-portion A; and a supplemental suspension-bar7c may be provided near the rear end of the body-portion, pivot-allyconnected at its opposite bent ends with the inner sides thereof.

As usual cutters should be provided in advance of the plow to cut theground ahead of the plow, thereby to lessen the work of the scraperproper. The cutters illustrated involve a steel shaft 'i journaled orotherwise supported at its opposite ends in bearings, preferably on theend-portions of the draftbar l, and carrying vertical disk-cutters h, inany desired number, and which should be supported to revolveindependently on the shaft. Besides, the cutters h afford a fulcrum onthe ground for the draw-bar, whereby it is given a leverage on thescraper (which may be changed by adjusting it up or down in theside-holes g through the vertical ends of the plow-bar and sides of thebody-portion A) to overcome any tendency thereof to penetrate the groundtoo deeply.

Where the scraper is designed for work requiring it to be hoisted fordumping, as in ballast-burning, means should be providedto render thedumping operation automatic. This I accomplish by hinging the bottom fnear the forward end of the body-portion A behind the plow-bar, (in amanner to avoid obstruction by the hinge on the base of the scraper,)and providing a catch C at its rearend to hold it when closed and torelease it for dumping. The form of' catch illustrated comprises a bar ebolted rigidly to the upper side of the bottom fand extending beyond itsrear end, where it. terminates in a head e having a shoulder and whichis bent to a right-angle, and a bent lever d pivoted at its bend to theouter surface of the back and terminating at it lower end in a head dhaving a shoulder, adapted toengage that of the head e' when` the bottomfis in closed position, the lever being controlled by aspring d2 to tendnormally to engage the head e'. Thus when the scraper has been filledand hoisted (being then suspended at the hanger p and supplementalhanger 7c) it may be dumped by pulling the lever CZ in the directiontoward the forward end of the scraper thereby releasing the catch andpermitting the load to force the bottom fopen and discharge; and bytilting the scraper toward a vertical position, or otherwise forcing thebottom, the latter will assume its place automatically and inv so doing,the head e will pass and engage the head d', thereby locking the bottomin closed position.

All the details and features thus described, when combined to produce ascraper, afford thereto all their incidental advantages; but it is notnecessary that they should all be combined in the same scraper, forseveral of the features, particularly in the plow-construction, improvea scraperto that extent if the other features of my improvement beomitted therefrom. Hence I do not wish to be understood as limiting myinvention to combinations of details in ascraperother than thoseexpressed in the several appended claims.

It may be suggested that, though not congsidered practicable, it iswithin the spirit of my invention, instead of providing an extra bar forthe plow, to form the cutter portions thereof on thel forward edge ofthe body-portion.

What I claim as new, and desire to secure by Letters Patent, is

1. A scraper formed with a body-portion `open at its forward end, incombination with a plow at the open end, comprising a bar `having in itsforward edge teeth beveled at 'their edges to form cutters, said barbeing bent toward its opposite ends through the end-teeth to suitableangles and secured at the bent end-portions to the sides of the said`body-portion, the bent end-portions being i. beveled from their innersides outward and forming cutters on their forward edges, substantiallyas described.

2. A scraper formed with a body-portion open at its forward end, incombination with a plow at the open end, comprising a bar having in itsforward edge cutter-teeth and v bent to suitable angles, the bent endsbeing secured to the sides of the-body-portion and forming cutters ontheir forward edges, the bar between the said ends inclining downwardand forward toward its cutter-edge and the teeth thence incliningupward, substantially as described.

3. A scraper formed with a body-portion open at its forward end, incombination with a` plow at the open end, comprising a bar provided witha beveled cutting edge having `projecting therefrom beveled teethforming cutters, said bar being bent toward its oppo- .site ends tosuitable angles, and secured at `ends n2 having the cutting edges t, adraftbar Z, and a shaft t', carrying cutter-disks 7L, in advance of theplow, substantially as described.

5. A scraper comprising, in combination, the body-portion A having therear drainageopening r', hinged bottom f provided with a IOO IIO

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catch C, brace-bar q and hanger-bars p and k, a plow B at the open endof the said bodyportion, having the downward inclined cutter-bar mprovided with the thence upward inclined cutter-teeth fn, n' and ends n2having the cutting edges t, an adjustable draft-bar Z, and shaft isupported in the draft'bar and carrying cutter-disks h, the whole beingconstructed and arranged to operate substantial] y as described.

HENRY G. BUTLER. In presence of- W. N. WILLIAMS, M. J. FROST.

